noun
hydrophyte; aquatic plant
Technical term in botany for plants that grow in water or very wet soil.
湿生植物は水辺の環境に適応している。
Hydrophytes are adapted to waterside environments.
水生植物 is a broader term for aquatic plants, while 湿生植物 specifically refers to plants that grow in wet or marshy conditions.
Compound of 湿生 (しっせい, 'wet growth') + 植物 (しょくぶつ, 'plant'). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.